4UIH

Cryo-EM structure of Dengue virus serotype 2 strain New Guinea-C complexed with human antibody 2D22 Fab at 37 degree C. The Fab molecules were added to the virus before 37 degree C incubation.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 20.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM structure of an antibody that neutralizes dengue virus type 2 by locking E protein dimers.

Fibriansah, G.Ibarra, K.D.Ng, T.S.Smith, S.A.Tan, J.L.Lim, X.N.Ooi, J.S.Kostyuchenko, V.A.Wang, J.de Silva, A.M.Harris, E.Crowe, J.E.Lok, S.M.

(2015) Science 349: 88-91

  • DOI: 10.1126/science.aaa8651
  • Primary Citation of Related Structures:  
    4UIF, 4UIH, 5A1Z

  • PubMed Abstract: 
  • There are four closely-related dengue virus (DENV) serotypes. Infection with one serotype generates antibodies that may cross-react and enhance infection with other serotypes in a secondary infection. We demonstrated that DENV serotype 2 (DENV2)-specific human monoclonal antibody (HMAb) 2D22 is therapeutic in a mouse model of antibody-enhanced severe dengue disease ...

    There are four closely-related dengue virus (DENV) serotypes. Infection with one serotype generates antibodies that may cross-react and enhance infection with other serotypes in a secondary infection. We demonstrated that DENV serotype 2 (DENV2)-specific human monoclonal antibody (HMAb) 2D22 is therapeutic in a mouse model of antibody-enhanced severe dengue disease. We determined the cryo-electron microscopy (cryo-EM) structures of HMAb 2D22 complexed with two different DENV2 strains. HMAb 2D22 binds across viral envelope (E) proteins in the dimeric structure, which probably blocks the E protein reorganization required for virus fusion. HMAb 2D22 "locks" two-thirds of or all dimers on the virus surface, depending on the strain, but neutralizes these DENV2 strains with equal potency. The epitope defined by HMAb 2D22 is a potential target for vaccines and therapeutics.


    Organizational Affiliation

    Program in Emerging Infectious Diseases, Duke-National University of Singapore Graduate Medical School, Singapore. Centre for BioImaging Sciences, National University of Singapore, Singapore. sheemei.lok@duke-nus.edu.sg james.crowe@vanderbilt.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DENGUE VIRUS SEROTYPE 2 STRAIN NEW GUINEA-C E PROTEIN ECTODOMAINA, B, C495Dengue virus 2Mutation(s): 0 
EC: 3.4.21.91 (PDB Primary Data), 3.6.1.15 (PDB Primary Data), 3.6.4.13 (PDB Primary Data), 2.1.1.56 (PDB Primary Data), 2.1.1.57 (PDB Primary Data), 2.7.7.48 (PDB Primary Data)
UniProt
Find proteins for P14340 (Dengue virus type 2 (strain Thailand/NGS-C/1944))
Explore P14340 
Go to UniProtKB:  P14340
Entity Groups  
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UniProt GroupP14340
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -HEAVY CHAIND, F128Homo sapiensMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -LIGHT CHAINE, G115Homo sapiensMutation(s): 0 
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Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 20.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-15
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Data collection, Derived calculations
  • Version 1.2: 2018-02-07
    Changes: Database references, Structure summary